CN102582589A - Supporting system and engineering machine with same - Google Patents
Supporting system and engineering machine with same Download PDFInfo
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- CN102582589A CN102582589A CN2012100199891A CN201210019989A CN102582589A CN 102582589 A CN102582589 A CN 102582589A CN 2012100199891 A CN2012100199891 A CN 2012100199891A CN 201210019989 A CN201210019989 A CN 201210019989A CN 102582589 A CN102582589 A CN 102582589A
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Abstract
The invention discloses a supporting system and an engineering machine with the same. The supporting system comprises supporting leg structures, connecting arms for mounting the supporting leg structures are fixed on the engineering machine, at least one supporting leg structure comprises two or more than two branch supporting legs hinged to the same connecting arm, and the supporting system further comprises a driving component for driving the branch supporting legs in the supporting leg structures to swing. On the premise of guaranteeing bearing capacity and stability, the supporting leg structures are shortened as compared with those in the prior art, so that the supporting leg structures can be made effective use of, and the short supporting leg structures do not need to occupy sites with large area and can be operated in limited space and meeting construction needs of the narrow sites. Bearing capacity is enhanced as the supporting leg structures respectively comprise at least two branch supporting legs, or on the premise that each branch supporting leg of each supporting leg structure is as same as each supporting leg structure in the prior art in length, the area of a supporting surface formed by the supporting leg structures is larger, and the bearing capacity and the anti-tipping capacity are higher.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of support system of construction machinery and equipment.The invention still further relates to a kind of construction machinery and equipment with above-mentioned support system.
Background technology
Construction machinery and equipment has support system usually, and in order to functions such as support car load, car load go, what realize supporting role mainly is the bracing or strutting arrangement of support system.With the concrete pump truck is example, and its bracing or strutting arrangement generally comprises four supporting legs that are positioned at the chassis, and during operation, two front leg struts stretch out forward, and two rear support legs stretch out backward in addition, are without loss of generality, and following is that example is introduced with the concrete pump truck.
Please refer to Fig. 1, Fig. 1 is the distribution schematic diagram of concrete pump truck supporting leg in the prior art, also shown is the polygon of supporting leg strong point line formation and the relation of body gravity locus circle.
The support system of concrete pump truck is provided with first front leg strut 11 and second front leg strut 12, and first rear support leg 13 and 14, four supporting legs of second rear support leg are installed on the fixedly capstan head place on chassis.The expansion form of the outrigger arm of supporting leg and start point, length all can be adjusted; To keep the stability of car load; Require supporting leg to have reasonable structure form, enough structural mechanical property and effective support scope in the design of concrete pump truck, to guarantee its load-carrying capacity and whole vehicle stability.
When need supporting, four outrigger arms (telescopic boom) elongation, reach Len req after, oil cylinder stretches out, and is supported in ground.The expansion form of four outrigger arms generally has: two front leg strut X types, two rear support leg oscillating-types; Two front leg strut V-types, two rear support leg oscillating-types; And the front leg strut oscillating-type etc.First front leg strut 11 shown in Figure 1 and second front leg strut 12 are V-type, can stretch, and first rear support leg 13 and second rear support leg 14 can be swung, and move to suitable position support thereby drive supporting leg, satisfy stability requirement.
Can know by foregoing; Concrete pump truck is generally 4 supports (four supporting leg); According to mechanics principle, during operation, must guarantee that car load center of gravity circle falls within (quadrangle formation bearing surface in four formed quadrangles of supporting leg strong point line; Be safety zone), can effectively prevent tumbling of car body.Suppose that pump truck front leg strut and rear support leg length are certain; A, B, C, D are respectively the strong point of pump truck first front leg strut 11, second front leg strut 12, the 3rd front leg strut 13, the 4th front leg strut among the figure; Constitute the quadrangle bearing surface by four strong points; Do vertical line from the line (CA, AB, BD, BC) of the round mind-set 4 adjacent supports points of the barycenter trajectory of concrete pump truck, this vertical line and strong point line and barycenter trajectory circle all have intersection point, can obtain four intersection points (intersection point) with strong point line; Be made as M, R, S, N; Be made as Q, E, F, G with cooresponding four intersection points of barycenter trajectory circle, intersection point M is made as L1 to the distance of intersection point Q, and intersection point R respectively is made as L2, L3, L4 to intersection point F, intersection point N to the distance of intersection point G to intersection point E, point of intersection S; L 1, L2, L3, L4 are the minor increment that the cooresponding strong point links to the barycenter trajectory circle, then can obtain the minimum value Lmin=min (L1, L2, L3, L4) of this quadrangle areal of support to the round line of barycenter trajectory.
Keep the prerequisite of pump truck stability to be: during the jib revolution, machine gravity is positioned at areal of support all the time, and promptly the shortest distance at this areal of support edge of the round line-spacing of barycenter trajectory should be greater than zero, otherwise will cause the pump truck unstability or tumble.
Promptly satisfy following relational expression:
Lmin=min (L 1, L2, L3, L4) >=0, i.e. Li >=0 (i=1,2,3,4).
By finding out among Fig. 1; First front leg strut 11 is P with the intersection point of barycenter trajectory circle; Can find out to be the barycenter trajectory circle that guaranteed supporting leg part (the dash area AP among Fig. 1) that Lmin >=0, the first front leg strut 11 exceeds intersection point P head and shoulders above, the part that exceeds is not utilized effectively.Be that pump truck leg structure of the prior art exists following technical matters:
The first, in order to realize load-carrying capacity and guarantee stability that existing front leg strut length is long, is underutilized, and redundancy occurred;
The second, in order to satisfy stability, when the supporting leg extension elongation is long, need take the larger area place, under the condition of limited of space, place, pump truck is not easy to operation.
In view of this, how improving support system, make it more stably support car load, is those skilled in the art's technical issues that need to address.
Summary of the invention
The object of the invention is for providing a kind of support system; The leg structure of this support system comprises at least two branch supporting legs; Then under the short situation of leg structure effective length, satisfy durability requirements; Make leg structure be fully utilized, simultaneously, also make construction machinery and equipment can be applied to the limited occasion of working space with this support system.Another object of the present invention provides a kind of construction machinery and equipment that comprises support system.
For reaching first purpose of the present invention; The present invention provides a kind of support system of construction machinery and equipment; Comprise leg structure; At least one said leg structure comprises two or more branch supporting leg, is fixed with connecting arm on the construction machinery and equipment, and each of said leg structure minute supporting leg all is articulated in a said connecting arm; Said support system also comprises the drive element that drives branch supporting leg swing in the said leg structure.
Preferably, leg structure comprises first fen supporting leg and the second fen supporting leg that is articulated on the connecting arm; Has predetermined distance between the hinge axes of first fen supporting leg and second fen supporting leg.
Preferably, first fen supporting leg, second fen supporting leg are swung in two swinging planes.
Preferably, leg structure comprises coaxial first fen supporting leg and second fen supporting leg that is articulated on the connecting arm, and first fen supporting leg and second fen supporting leg are swung in two swinging planes.
Preferably, said drive element comprises first oil cylinder, second oil cylinder and connecting rod mechanism, to drive said first minute supporting leg, second fen supporting leg to the same side of construction machinery and equipment swing.
Preferably, an end of said first oil cylinder is articulated in said connecting arm, and the other end is articulated in said first minute supporting leg; Said connecting rod mechanism comprises first connecting rod and second connecting rod; One end of said first connecting rod, second connecting rod is articulated in said connecting arm, second supporting leg respectively; One end of said second oil cylinder is articulated in said connecting arm, and the other end of said second oil cylinder, first connecting rod, second connecting rod is hinged through jointed shaft.
Preferably, supporting leg comprised the hold-down arm that outrigger arm is terminal with being arranged on outrigger arm in said minute, and said outrigger arm is made up of arm joint flexible relatively successively more than the one-level.
Leg structure comprises at least two branch supporting legs among the present invention; Under the prerequisite that guarantees load-carrying capacity and stability; Among the present invention in the leg structure each minute supporting leg length can be utilized effectively; And,, strengthened load-carrying capacity because leg structure has two branch supporting legs at least compared to prior art; Further; Because the length of leg structure can be shorter, during operation, need not to take the larger area place; Also can keep the stable of car load; Thereby make the construction machinery and equipment can operation in limited space, satisfy the construction demand in narrow and small place, make the field of application of construction machinery and equipment more extensive with this support system; Or in leg structure each minute supporting leg length and prior art under the prerequisite of leg structure equal in length; The bearing surface area that leg structure forms among the present invention program is bigger; The supporting capacity and the anti-tipping ability of support system that promptly has this supporting leg arrangement is stronger, and boundary of works area is wider.
For reaching another object of the present invention, the present invention also provides a kind of construction machinery and equipment, has support system and chassis, and said support system is above-mentioned each described support system.Because above-mentioned support system has above-mentioned technique effect, the construction machinery and equipment with this support system also has identical technique effect.
Description of drawings
Fig. 1 is the distribution schematic diagram of concrete pump truck supporting leg in the prior art, also shown is the polygon of supporting leg strong point line formation and the relation of body gravity locus circle;
Fig. 2 is in the structure principle chart of a kind of specific embodiment of contraction state for leg structure in the support system provided by the present invention;
Fig. 3 is in the structure principle chart of deployed condition for leg structure among Fig. 2;
Fig. 4 is that the position of leg structure strong point line and body gravity locus circle concerns scheme drawing among Fig. 3;
Fig. 5 is in the structure principle chart of deployed condition for leg structure in the another kind of specific embodiment of concrete pump truck leg structure provided by the present invention;
Fig. 6 is in the structure principle chart of deployed condition for leg structure in another specific embodiment of support system provided by the present invention;
Fig. 7 is in the structure principle chart of contraction state for supporting leg among Fig. 6.
The specific embodiment
Core of the present invention is for providing a kind of support system; The leg structure of this support system has at least two branch supporting legs; Under the short situation of leg structure effective length, satisfy durability requirements; Make leg structure be fully utilized, simultaneously, also make construction machinery and equipment can be applied to the limited occasion of working space with this support system.Another core of the present invention provides a kind of construction machinery and equipment that comprises support system.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is in the structure principle chart of a kind of specific embodiment of contraction state for leg structure in the support system provided by the present invention; Fig. 3 is in the structure principle chart of deployed condition for leg structure among Fig. 2.
Support system in this specific embodiment has two front leg strut structures and two rear support leg structures; Front leg strut shown in Fig. 3 and rear support leg all are symmetrically distributed in the both sides of axis, chassis; Be without loss of generality; With the concrete pump truck is example, and the front leg strut structure of concrete pump truck and rear support leg structure all are arranged at the fixedly left and right sides of capstan head 100, chassis.
The front leg strut structure that is positioned at the both sides, axis in this specific embodiment includes first fen supporting leg and second fen supporting leg; Be that the left side front leg strut structure shown in Fig. 3 comprises that first parts supporting leg 211 and second on the left side and part supporting leg 212 on the left side; Right side front leg strut structure comprises that first parts supporting leg 221 and second on the right side and part supporting leg 222 on the right side; Promptly in fact, this support system be provided with four front leg struts (described in the literary composition about be axis, chassis two side directions, about in Fig. 2 and Fig. 3, showing as).Wherein, The branch supporting leg of leg structure all is articulated on the connecting arm of construction machinery and equipment; Connecting arm is fixed in construction machinery and equipment; First connecting arm 21 and second connecting arm 22 all are fixed in fixedly on the capstan head 100 among the figure, and first of left front leg structure parts supporting leg 211 and second on the left side and parts supporting leg 212 on the left side and be connected in the fixedly left side of capstan head 100 through first connecting arm 21, and first of right front leg structure parts supporting leg 221 and second on the right side and parts supporting leg 222 on the right side and be fixed in the fixedly right side of capstan head 100 through second connecting arm 22.Among this embodiment, connecting arm is an one-piece construction, and in fact, connecting arm can be split type hinged seat also, and the branch supporting leg in the leg structure is respectively at being articulated in cooresponding hinged seat.Based on durability requirements, the distance that front leg strut structure and rear support leg structure adjacent supports point link to the round heart of construction machinery and equipment barycenter trajectory is all greater than the center of gravity radius of a circle.
Please combine Fig. 4 to understand; Fig. 4 is that the position of leg structure strong point line and body gravity locus circle concerns scheme drawing among Fig. 3; What this figure solid line was represented is structure of the present invention; Also show front leg strut structure of the prior art by a dotted line, through contrast so that distinguish prior art front leg strut structure and the front leg strut structure of this programme.
After front leg strut structure and rear support leg structure all reach the desired location; Be respectively A1, A2 if first parts the strong point that supporting leg 211 and second parts supporting leg 212 on the left side on the left side; First parts the strong point that supporting leg 221 and second parts supporting leg 222 on the right side on the right side is respectively B 1, B2; The strong point of first rear support leg 23 and second rear support leg 24 is respectively C1, D1, then connects the adjacent supports point successively, can obtain the hexagon bearing surface that each supporting leg forms.By the round mind-set hexagon of the barycenter trajectory bearing surface sideline (line of supporting leg adjacent supports point; Be B 1A1, A1A2, A2D, DC, CB2, B2B1) make vertical line; Can obtain hexagon areal of support sideline and the pairing shortest distance of the round line of barycenter trajectory respectively; Be made as L1 ', L2 ', L3 ', L4 ', L5 ', L6 ' respectively, and try to achieve the shortest distance Smin '=min (L1 ', L2 ', L3 ', L4 ', L5 ', L6 ') in this hexagon areal of support sideline of the round line-spacing of barycenter trajectory.
For satisfying pump truck stability, the shortest distance in this hexagon areal of support sideline of the round line-spacing of car load barycenter trajectory should satisfy:
Smin '=min (L1 ', L2 ', L3 ', L4 ', L5 ', L6 ') >=0, be Li ' >=0 (i=1,2,3; 4,5,6) (satisfy this condition; The distance that is car load center of gravity to hexagon bearing surface sideline is all greater than the barycenter trajectory radius of circle, and promptly the barycenter trajectory circle falls in the bearing surface).
As can be seen from Figure 4; Compare with the leg structure of prior art; Under the prerequisite that guarantees Smin ' >=0; First parts supporting leg 211 and second on the left side parts supporting leg 212, first on the left side and parts the length that supporting leg 221 and second parts supporting leg 222 on the right side on the right side and be significantly less than front leg strut scantling length of the prior art, is promptly guaranteeing that bearing surface can hold on the basis of barycenter trajectory circle, and the effective length of this programme front leg strut structure obviously reduces compared to prior art.
Can know according to above-mentioned analysis; Under the prerequisite that guarantees load-carrying capacity and stability; The length of front leg strut structure each minute supporting leg can be utilized effectively among the present invention, and compared to prior art, because the front leg strut structure comprises the branch supporting leg of shorter length; Under almost increasing complete vehicle weight (among Fig. 4, first part the length of a front leg strut structure in overall length and the prior art that supporting leg 211 and second parts supporting leg 212 on the left side on the left side roughly suitable) prerequisite, do not strengthened load-carrying capacity; Further; Owing to divide the length of supporting leg shorter, during operation, need not to take the larger area place; Also can keep the stable of car load; Thereby make the construction machinery and equipment can operation in limited space, satisfy the construction demand in narrow and small place, make the field of application of construction machinery and equipment more extensive with this support system.
Or from another angle and opinion, in the length of each supporting leg and the prior art under the prerequisite of front leg strut equal in length, the bearing surface area that front leg strut forms among the present invention program is bigger in the front leg strut structure.The supporting capacity and the anti-tipping ability of support system that promptly has this supporting leg arrangement is stronger, and boundary of works area is wider.
Please continue referring to figs. 2 and 3 because first part supporting leg 211, second on the left side and part supporting leg 212, first on the left side and part supporting leg 221, second on the right side to part supporting leg 222 (four front leg strut) length on the right side shorter, so four front leg struts all can be the oscillating-type supporting leg.That is, all with fixedly capstan head 100 is hinged to make four front leg struts, such as, fixedly capstan head is hinged with concrete pump truck.When then concrete pump truck changes motoring condition over to; As shown in Figure 2, first parts supporting leg 211, second on the left side parts the left side that supporting leg 212 can close at car body on the left side, and first parts supporting leg 221 and second on the right side parts the right side that supporting leg 222 closes at car body on the right side; First rear support leg 23 and second rear support leg 24 also correspondingly close at the car body both sides respectively; Because the length of four branch supporting legs is shorter, when four branch supporting legs are regained the car body both sides, can not interfere with rear support leg; When car body gets into operating condition, each minute supporting leg can be expanded to the optimum position respectively, and be supported on the ground.The front leg strut structure of this kind structure, the orientation is regulated more easy, and alerting ability is stronger.For the structure that makes construction machinery and equipment is more compact, satisfy the width demand, fixedly on the capstan head 100 breach 101 is set; Breach 101 extends along the construction machinery and equipment length direction, when then the branch supporting leg in the leg structure is retracted to fixedly capstan head 100 both sides, is positioned at this breach 101 places just; Can understand with reference to Fig. 2; When fixing capstan head 100 anterior left and right sides front leg strut structures include the branch supporting leg, in the fixing both sides of capstan head 100 breach 101 is set all, so that the branch supporting leg of both sides all is recoverable to cooresponding breach 101 places; Make complete vehicle structure more compact, satisfy the width demand.
When first parted supporting leg 211 and second on the left side and part supporting leg 212, first on the left side and part supporting leg 221 and second on the right side and part supporting leg 222 for the oscillating-type supporting leg on the right side, driving the drive element that these four oscillating-type front leg struts rotate can be driving oil cylinder.As shown in Figure 3, be example with right front leg structure, drive element comprises first oil cylinder 33, second oil cylinder 34 and the connecting rod mechanism.One end of second oil cylinder 34 is articulated in fixedly capstan head 100, and the other end is articulated in second and parts supporting leg 222 on the right side; Connecting rod mechanism comprises first connecting rod 31 and second connecting rod 32; One end of first connecting rod 31, second connecting rod 32 is articulated in first respectively and parts supporting leg 221, connecting arm on the right side; It is hinged through jointed shaft that one end of first oil cylinder 33 is articulated in the other end of fixing capstan head 100, the first oil cylinders 33, first connecting rod 31, second connecting rod 32.This kind type of drive can guarantee that each minute supporting leg on the connecting arm is rocked to the same side, is convenient to regain the branch supporting leg.Each minute, supporting leg comprised the hold-down arm that outrigger arm is terminal with being arranged at outrigger arm; Outrigger arm can be made up of arm joint flexible relatively more than the one-level; Promptly divide supporting leg itself to stretch; This kind mode makes and the advantage of dividing supporting leg to have concertina type supporting leg and oscillating-type supporting leg concurrently makes that the expansion layout and the withdrawal of leg structure are all comparatively flexible.
Drive element also can be motor, please refer to Fig. 5, and Fig. 5 is in the structure principle chart of deployed condition for leg structure in the another kind of specific embodiment of concrete pump truck leg structure provided by the present invention.With right front leg structure is example; First parts supporting leg 221 on the right side is driven by first motor 41, and second parts supporting leg 222 on the right side is driven by second motor 42, and it is easier that the installation of motor and control compare to driving oil cylinder; And when drive element was motor, whole leg structure was comparatively simple.
In the foregoing description, among Fig. 3 in the front leg strut structure each minute supporting leg jointed shaft be positioned at the diverse location place of connecting arm, promptly have predetermined distance between the axis of jointed shaft, be convenient to the withdrawal and the expansion of branch supporting leg.At this moment, each minute supporting leg is swung in different swinging planes, then each minute supporting leg swing and regain and can not interfere each other; Certainly; When each minute, supporting leg was swung, rationally control the swing path of each minute supporting leg in same plane, also can realize the object of the invention.
In fact, the jointed shaft of each of leg structure minute supporting leg also can coaxially be provided with, and is as shown in Figure 6; Fig. 6 is in the structure principle chart of deployed condition for leg structure in another specific embodiment of support system provided by the present invention; At this moment, each minute supporting leg of leg structure is swung, during withdrawal in different swinging planes; Each minute, supporting leg was laminated in a side of car body, can not increase the width of car body.Can be with reference to figure 7, Fig. 7 is in the structure principle chart of contraction state for supporting leg among Fig. 6.
To the foregoing description, the front leg strut structure of both sides includes two fens supporting legs, and in fact, also only a side front leg strut structure comprises two fens supporting legs, or the rear support leg structure comprises the branch supporting leg.When the front leg strut structure comprised the branch supporting leg, two front leg strut structure optimizations were symmetrical structure, made that support is more stable.Can expect that further leg structure also can comprise the branch supporting leg more than three or three, such as; Left front leg structure comprises that first parts supporting leg 211, second on the left side and part supporting leg the 212, the 3rd left front supporting leg, the 4th left front supporting leg on the left side ... the left front supporting leg of n, wherein, and n >=5; Right front leg structure can be taked symmetrical structure, under identical steadiness, divides the number of supporting leg many more in the front leg strut structure; The length of each front leg strut structure can be shorter (or under the certain situation of branch's leg length, the bearing surface area that each leg structure forms is maximum), certainly; Because the restriction of complete vehicle weight; And the length of leg structure needs greater than the barycenter trajectory radius of a circle, so the front leg strut structure comprises that two fens supporting legs are for comparatively desirable scheme, compared to prior art; Under the situation that increases complete vehicle weight hardly, can shorten the length of leg structure to greatest extent.
Except above-mentioned support system, the present invention also provides a kind of construction machinery and equipment, has support system and is positioned at the jib on the support system, and described support system is the described support system of above-mentioned arbitrary embodiment.Because above-mentioned support system has above-mentioned technique effect, the construction machinery and equipment with this support system also has identical technique effect, does not give unnecessary details at this.
More than a kind of construction machinery and equipment provided by the present invention and support system thereof have been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. the support system of a construction machinery and equipment; Comprise leg structure, it is characterized in that at least one said leg structure comprises two or more branch supporting leg; Be fixed with connecting arm on the construction machinery and equipment, each of said leg structure minute supporting leg all is articulated in a said connecting arm; Said support system also comprises the drive element that drives branch supporting leg swing in the said leg structure.
2. the support system of construction machinery and equipment according to claim 1 is characterized in that, leg structure comprises first fen supporting leg and the second fen supporting leg that is articulated on the connecting arm; Has predetermined distance between the hinge axes of first fen supporting leg and second fen supporting leg.
3. the support system of construction machinery and equipment according to claim 2 is characterized in that, first fen supporting leg, second fen supporting leg are swung in two swinging planes.
4. the support system of construction machinery and equipment according to claim 1 is characterized in that, leg structure comprises coaxial first fen supporting leg and second fen supporting leg that is articulated on the connecting arm, and first fen supporting leg and second fen supporting leg are swung in two swinging planes.
5. according to the support system of each described construction machinery and equipment of claim 2 to 4; It is characterized in that; Said drive element comprises first oil cylinder, second oil cylinder and connecting rod mechanism, to drive said first minute supporting leg, second fen supporting leg to the same side of construction machinery and equipment swing.
6. the support system of construction machinery and equipment according to claim 5 is characterized in that, an end of said first oil cylinder is articulated in said connecting arm, and the other end is articulated in said first minute supporting leg; Said connecting rod mechanism comprises first connecting rod and second connecting rod; One end of said first connecting rod, second connecting rod is articulated in said connecting arm, second supporting leg respectively; One end of said second oil cylinder is articulated in said connecting arm, and the other end of said second oil cylinder, first connecting rod, second connecting rod is hinged through jointed shaft.
7. the support system of construction machinery and equipment according to claim 5 is characterized in that, supporting leg comprised the hold-down arm that outrigger arm is terminal with being arranged on outrigger arm in said minute, and said outrigger arm is made up of arm joint flexible relatively successively more than the one-level.
8. a construction machinery and equipment has support system and chassis, it is characterized in that, said support system is each described support system of claim 1 to 7.
9. construction machinery and equipment according to claim 8 is characterized in that, construction machinery and equipment has the fixedly capstan head of captive joint arm; Fixedly capstan head is provided with the breach that extends along the construction machinery and equipment length direction, and each of leg structure all is positioned at this gap position when supporting leg was regained in said minute.
10. construction machinery and equipment according to claim 9 is characterized in that the both sides of said construction machinery and equipment are equipped with said leg structure, and said leg structure is located at the front portion of said construction machinery and equipment; The both sides of said fixedly capstan head are equipped with said breach, are positioned at the gap position of a corresponding side after the branch supporting leg in the leg structure of both sides is regained.
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| WO2013091329A1 (en) * | 2011-12-21 | 2013-06-27 | 湖南三一智能控制设备有限公司 | Engineering machinery and stabilizer structure thereof |
| WO2015155091A1 (en) * | 2014-04-09 | 2015-10-15 | Putzmeister Engineering Gmbh | Mobile concrete pump with support device and concrete-distributing boom |
| CN105292082A (en) * | 2014-05-29 | 2016-02-03 | 中联重科股份有限公司 | Control method and control device for preventing engineering machinery from tipping and engineering machinery |
| CN106629428A (en) * | 2016-12-12 | 2017-05-10 | 三汽车制造有限公司 | Sectioned control method and system for boom system and boom equipment |
| CN106706333A (en) * | 2016-12-13 | 2017-05-24 | 北汽福田汽车股份有限公司 | Concrete pump truck stability test method |
| CN117227673A (en) * | 2023-11-13 | 2023-12-15 | 山东鸿达重工机械制造有限公司 | Auxiliary supporting leg structure of concrete pump truck |
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| CN201882059U (en) * | 2010-12-28 | 2011-06-29 | 三一重工股份有限公司 | Control system for movable type engineering machine and support legs thereof |
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| WO2015155091A1 (en) * | 2014-04-09 | 2015-10-15 | Putzmeister Engineering Gmbh | Mobile concrete pump with support device and concrete-distributing boom |
| CN105292082A (en) * | 2014-05-29 | 2016-02-03 | 中联重科股份有限公司 | Control method and control device for preventing engineering machinery from tipping and engineering machinery |
| CN105292082B (en) * | 2014-05-29 | 2017-09-26 | 中联重科股份有限公司 | Control method and control device for preventing engineering machinery from tipping and engineering machinery |
| CN106629428A (en) * | 2016-12-12 | 2017-05-10 | 三汽车制造有限公司 | Sectioned control method and system for boom system and boom equipment |
| CN106706333A (en) * | 2016-12-13 | 2017-05-24 | 北汽福田汽车股份有限公司 | Concrete pump truck stability test method |
| CN117227673A (en) * | 2023-11-13 | 2023-12-15 | 山东鸿达重工机械制造有限公司 | Auxiliary supporting leg structure of concrete pump truck |
| CN117227673B (en) * | 2023-11-13 | 2024-01-23 | 山东鸿达重工机械制造有限公司 | Auxiliary supporting leg structure of concrete pump truck |
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